======================================================================== CVE-2026-85783 CPAN Security Group ========================================================================
CVE ID: CVE-2026-85783 Distribution: Crypt-Age Versions: before 0.004 MetaCPAN: https://metacpan.org/dist/Crypt-Age VCS Repo: https://github.com/Getty/p5-crypt-age Crypt::Age versions before 0.004 for Perl allow CPU exhaustion via an unbounded number of recipient stanzas, each costing an X25519 scalar multiplication in unwrap_file_key Description ----------- Crypt::Age versions before 0.004 for Perl allow CPU exhaustion via an unbounded number of recipient stanzas, each costing an X25519 scalar multiplication in unwrap_file_key. The header parser accepts any number of recipient stanzas, and unwrap_file_key tries every identity against every X25519 stanza. Each attempt runs a scalar multiplication, an HKDF and a ChaCha20-Poly1305 open. The header MAC cannot be checked first, because its key comes from the file key, which only a successful unwrap produces. Each stanza is 98 bytes of attacker-chosen header and buys one scalar multiplication per identity held, and the file is rejected only after every one of them has run. A caller reaches this through decrypt, decrypt_file or decrypt_filehandle whenever it decrypts a file it did not write. Problem types ------------- - CWE-770 Allocation of Resources Without Limits or Throttling - CWE-405 Asymmetric Resource Consumption (Amplification) Solutions --------- Upgrade to Crypt-Age 0.004 or later. References ---------- https://metacpan.org/release/GETTY/Crypt-Age-0.004/changes
